VISOCOLOR® ECO Chromium
Colorimetric determination of chromium (VI)
In sulphuric acid chromate ions react with diphenylcarbazide to form a red-violet dye. (Reaction principle analogous to APHA 3500-Cr D & DIN EN ISO 18412)
| Data and ordering information | |
| Cat. No. | 931 020 (931 220) |
| Type | colorimetric test kit (refill pack) |
| Range | 0.02 0.05 0.1 0.15 0.2 0.3 0.4 0.5 mg/l Cr(VI) |
| Sufficient for | 140 determinations |
| Shelf life | at least 18 months |
| Sea water suitability | yes |
| Detectable with PF-11 | yes |
Chromium compounds can be present in industrial waste waters in trivalent form [chromium(III) ions] and in hexavalent form (chromate and dichromate ions). In order to determine the total chromium all other valencies must be oxidised to chromium(VI).
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